Hypersonic Full View Compass Ball Dashboard Dash Mount Navigation Black Choose to put the sucker on the room-mirror, or to use a sticker tape to stick on the Dash-board. Design of ball-joint: It is easy to adjust angle and find out the direction. It is easy to read while driving. The forward angle of compass is showed the driving direction because of the opposite theory. Do not stick on the fabric, curve surface and air bag. One year warranty.